Projection screen and projection system

Abstract

The utility model provides a projection screen and a projection system, and the projection screen comprises a display diaphragm which is provided with a projection light-receiving surface; the screen frame comprises an inner frame, the inner frame comprises first frames, second frames and vertical beams, the number of the first frames and the number of the second frames are both two, the two first frames and the two second frames are alternately arranged so as to surround the periphery of the display membrane, the length of the second frames is larger than that of the first frames, and the first frames are arranged in a foldable mode; the vertical beam is located in the middle of the display diaphragm, the vertical beam is provided with two vertical beam sections capable of being in butt joint, the two vertical beam sections are hinged to the two second frames respectively, and the two vertical beam sections are jointly supported between the two second frames when being in butt joint; and when the two vertical beam sections are separated from butt joint, the vertical beam sections are accommodated in the corresponding second frames. According to the utility model, convenient home entry is realized, and the installation speed is obviously improved.

Description

Technical Field

[0001] The utility model relates to the technical field of projection, in particular to a projection screen and a projection system. Background Art

[0002] As society continues to develop, people's pursuits are also changing. For laser TVs, the lightness and simplicity of the screen have become a pursuit indicator for people. Therefore, laser screens need to be lighter, simpler, and faster, and achieve steady coordinated development with the market.

[0003] Currently, a projection screen includes a screen frame and a display film. The screen frame is arranged around the display film to protect and support the display film.

[0004] However, when the existing projection screen is installed at home, it is inconvenient to transport and install it because of its large size. Utility Model Content

[0005] The main purpose of the utility model is to provide a projection screen and a projection system, which can realize convenient home access and significantly improve the installation speed.

[0006] To achieve the above objectives, in a first aspect, the utility model provides a projection screen, comprising:

[0007] A display film, wherein the display film has a projection light receiving surface;

[0008] A screen frame, the screen frame includes an inner frame, the inner frame includes a first frame, a second frame and a vertical beam, the first frame and the second frame are both two, and the two first frames and the second frames are alternately arranged to surround the outer periphery of the display film, wherein the length of the second frame is greater than the length of the first frame, and the first frame can be folded;

[0009] The vertical beam is located in the middle of the display film and has two connectable vertical beam sections. The two vertical beam sections are respectively hinged to the two second frames. When the two vertical beam sections are connected, they are jointly supported between the two second frames; when the two vertical beam sections are disconnected, the vertical beam sections are accommodated in the corresponding second frames.

[0010] The beneficial effects of the present invention are as follows: through the foldable design of the screen frame, scattered projection screens can be folded, which can reduce the volume of the screen entering the house on the one hand, realize convenient entry into the house, and reduce the transportation and or entry volume; on the other hand, the folding and fixing is simple when assembling the inner frame at the user's home, which can significantly improve the installation speed, greatly reduce the labor intensity, and improve the product impact; in addition, since the vertical beam is pre-installed between the two second frames, the vertical beam is foldable, which ensures the improvement of the efficiency of the folding and assembly of the overall inner frame into the house, while playing a supporting role and enhancing the stability of the entire inner frame.

[0011] On the basis of the above technical solution, the present invention can also be improved as follows.

[0012] In some optional embodiments, at least one second frame has a receiving groove facing the other second frame, and the disengaged vertical beam section is received in the receiving groove.

[0013] In some optional embodiments, when the two vertical beam sections are disconnected from each other, they rotate in opposite directions and are attached to the corresponding second frame.

[0014] In some optional embodiments, the first frame includes two first frame segments rotatably connected to each other, the first ends of the two first frame segments are hinged to each other, and the second end of each first frame segment is hinged to the corresponding second frame;

[0015] When the first frame is folded, the two first frame segments rotate toward the middle of the second frame, so that the two first frame segments are stacked between the two second frames.

[0016] In some optional embodiments, in the length direction of the second frame, there is a receiving area between the first frame segment and the middle portion of the second frame, and at least one vertical beam segment is received in the receiving area;

[0017] The vertical beam section includes a first vertical beam section and a second vertical beam section; the length of the first vertical beam section is greater than that of the second vertical beam section, and when the first vertical beam section and the second vertical beam section are disconnected, the second vertical beam section is accommodated in the accommodating area.

[0018] In some optional embodiments, a connecting rod is provided on the second frame, and the connecting rod is configured to connect the two second frames when the first frame is folded.

[0019] In some optional embodiments, either the first vertical beam segment or the second vertical beam segment is provided with a protrusion, and the other has a notch, the protrusion and the notch match each other in shape, and the protrusion snaps into the notch to connect the first vertical beam segment and the second vertical beam segment.

[0020] In some optional embodiments, a hinge unit is further included, and the hinge unit includes a first hinge unit and a second hinge unit;

[0021] The first hinge unit is located in the middle of the second frame so that the second frame can be folded, and the second hinge unit is located in the middle of the first frame so that the first frame can be folded.

[0022] In a second aspect, the utility model further provides a projection screen, comprising:

[0023] A display film, wherein the display film has a projection light receiving surface;

[0024] The screen frame includes an inner frame, a first frame, a second frame and a vertical beam. The first frame and the second frame are arranged around the periphery of the display film, wherein the first frame can be folded, and the vertical beam has two vertical beam sections that can be connected. When the two vertical beam sections are connected, they are jointly supported between the two second frames. When the two vertical beam sections are disconnected, the vertical beam sections are accommodated in the corresponding second frames.

[0025] In a third aspect, the utility model further provides a projection system, comprising a projection device and the above-mentioned projection screen, wherein the projection device is used to project a projection picture onto the projection screen.

[0026] The utility model provides a projection screen and a projection system, wherein the projection system comprises a projection device and a projection screen, wherein the projection device is used for projecting a projection picture onto the projection screen; wherein the projection screen comprises: a display film, wherein the display film has a projection light-receiving surface; a screen frame, wherein the screen frame comprises an inner frame, wherein the inner frame comprises a first frame, a second frame and a vertical beam, wherein the first frame and the second frame are both two, and the two first frames and the second frames are alternately arranged to surround the outer periphery of the display film, wherein the length of the second frame is greater than the length of the first frame, and the first frame can be folded; the vertical beam is located in the middle of the display film, wherein the vertical beam has two vertical beam sections that can be butted against each other, wherein the two vertical beam sections are respectively hinged to the two second frames, and when the two vertical beam sections are butted against each other, they are jointly supported between the two second frames; when the two vertical beam sections are detached from the butt joint, the vertical beam sections are accommodated in the corresponding second frames.

[0027] Through the foldable design of the screen frame, scattered projection screens can be folded, which can, on the one hand, reduce the volume of the screen entering the house, realize convenient entry into the house, and reduce the transportation and or entry volume; on the other hand, the folding and fixing when assembling the inner frame at the user's home is simple, which can significantly improve the installation speed, greatly reduce the labor intensity, and enhance the product influence; in addition, since the vertical beam is pre-installed between the two second frames, the vertical beam is foldable, which ensures the improvement of the overall inner frame folding and assembly efficiency when entering the house, while playing a supporting role and enhancing the stability of the entire inner frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0029] Figure 1 An exploded view of a projection screen provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the structure of an inner frame in a projection screen provided in an embodiment of the present application;

[0031] Figure 3 A schematic diagram of a first state of a vertical beam in a projection screen provided by an embodiment of the present application;

[0032] Figure 4 A schematic diagram of a second state of a vertical beam in a projection screen provided by an embodiment of the present application;

[0033] Figure 5 A schematic diagram of the rotation of a vertical beam in a projection screen provided in an embodiment of the present application;

[0034] Figure 6 A schematic diagram of a second state of a vertical beam in a part of a projection screen provided by an embodiment of the present application at a first viewing angle;

[0035] Figure 7 A schematic diagram of a second state of a vertical beam in a part of a projection screen provided by an embodiment of the present application at a second viewing angle;

[0036] Figure 8 A schematic diagram of a third state of a vertical beam in a portion of a projection screen provided in an embodiment of the present application;

[0037] Fig. 9 A schematic diagram of a first state of a first frame in a projection screen provided in an embodiment of the present application;

[0038] Fig.10 A schematic diagram of a second state of a first frame in a projection screen provided in an embodiment of the present application;

[0039] Fig.11 A schematic diagram of a third state of a first frame in a projection screen provided in an embodiment of the present application;

[0040] Fig.12 A schematic diagram of a first state of a rotating rod in a projection screen provided by an embodiment of the present application;

[0041] Fig.13 A schematic diagram of a second state of a rotating rod in a projection screen provided by an embodiment of the present application;

[0042] Fig.14 A schematic diagram of a third state of a rotating rod in a projection screen provided by an embodiment of the present application;

[0043] Fig.15 A schematic diagram of the rotation of the rotating rod and the connecting rod in the projection screen provided in an embodiment of the present application;

[0044] Fig.16 A schematic diagram of a partial structure of an inner frame in a projection screen provided in an embodiment of the present application;

[0045] Fig.17 A schematic diagram of the structure of a first hinge unit in a projection screen provided in an embodiment of the present application;

[0046] Fig.18 A schematic diagram of the structure of a second hinge unit in a projection screen provided in an embodiment of the present application;

[0047] Fig.19 A schematic diagram of a first state of a second frame in a projection screen provided in an embodiment of the present application;

[0048] Fig. 20 A schematic diagram of a second state of a second frame in a projection screen provided in an embodiment of the present application;

[0049] Fig.21 A schematic diagram of a third state of the second frame in the projection screen provided by an embodiment of the present application;

[0050] Fig. 22 An exploded view of a display film in a projection screen provided in an embodiment of the present application;

[0051] Fig.23 An exploded view of a screen frame in a projection screen provided in an embodiment of the present application.

[0052] Description of reference numerals:

[0053] 100-projection screen;

[0054] 110-display diaphragm;

[0055] 111-Synthetic fabric;

[0056] 112-tie rod;

[0057] 120-screen frame;

[0058] 121- inner frame;

[0059] 1211-first border;

[0060] 12111-first border segment;

[0061] 12112-rotating rod;

[0062] 1212-second border;

[0063] 1213-vertical beam;

[0064] 12131-first vertical beam section;

[0065] 12132-Second vertical beam section;

[0066] 12133-bump;

[0067] 12134-Gap;

[0068] 122-external frame;

[0069] 123-connecting rod;

[0070] 124-hinge unit;

[0071] 1241-first hinge unit;

[0072] 1242-Second hinge unit. DETAILED DESCRIPTION

[0073] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. All other embodiments obtained are within the scope of protection of the utility model. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0074] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0075] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0076] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0077] At present, the projection screen includes a screen frame and a display film, and the screen frame is arranged around the display film to protect and support the display film. However, when the existing projection screen is installed at home, it is inconvenient to transport and install it because of its large size.

[0078] In order to overcome the defects in the prior art, the projection screen and projection system provided by the utility model can fold scattered projection screens through the foldable design of the screen frame. On the one hand, the volume of the screen entering the house can be reduced, which can facilitate the entry into the house and reduce the transportation and / or entry volume; on the other hand, the folding and fixing are simple when assembling the inner frame at the user's home, which can significantly improve the installation speed, greatly reduce the labor intensity, and enhance the product influence; in addition, since the vertical beam is pre-installed between the two second frames, the vertical beam is foldable, which can ensure the improvement of the efficiency of the folding and assembly of the overall inner frame into the house, while playing a supporting role and enhancing the stability of the entire inner frame.

[0079] The content of the utility model will be described in detail below with reference to the accompanying drawings so that those skilled in the art can understand the content of the utility model more clearly and in detail.

[0080] Figure 1 An exploded view of a projection screen provided in an embodiment of the present application, Figure 2This is a schematic diagram of the structure of the inner frame of the projection screen provided in the embodiment of the present application. Figure 3 This is a schematic diagram of a first state of a vertical beam in a projection screen provided in an embodiment of the present application. Figure 4 A schematic diagram of a second state of a vertical beam in a projection screen provided in an embodiment of the present application, Figure 5 A schematic diagram of the rotation of a vertical beam in a projection screen provided in an embodiment of the present application, Figure 6 This is a schematic diagram of a second state of a vertical beam in a part of a projection screen provided by an embodiment of the present application at a first viewing angle, Figure 7 This is a schematic diagram of a second state of a vertical beam in a part of a projection screen provided by an embodiment of the present application at a second viewing angle, Figure 8 A schematic diagram of a third state of a vertical beam in a partial projection screen provided in an embodiment of the present application.

[0081] like Figures 1 to 8 As shown, the embodiment of the present application provides a projection screen 100, including:

[0082] A display film 110, wherein the display film 110 has a projection light receiving surface;

[0083] It can be understood that the front side of the display film 110 is the projection light receiving surface.

[0084] The screen frame 120 includes an inner frame 121, and the inner frame 121 includes a first frame 1211, a second frame 1212, and a vertical beam 1213. The first frame 1211 and the second frame 1212 are both two, and the two first frames 1211 and the second frames 1212 are alternately arranged to surround the outer periphery of the display film 110, wherein the length of the second frame 1212 is greater than the length of the first frame 1211, and the first frame 1211 can be folded;

[0085] It should be noted that the screen frame 120 is generally a frame-type structure, and the screen frame 120 encloses a rectangular or square hollow area, which can be used to place the display film 110, and the screen frame 120 can surround the edge of the display film 110 to provide protection for the display film 110, and the screen frame 120 and the display film 110 are connected and tensioned by a deformable or displaceable tensioning module.

[0086] In some examples, the screen frame 120 may be a metal member, and its material may include one or more of copper, iron, aluminum, tin, and lead.

[0087] In other examples, the screen frame 120 may be made of plastic.

[0088] It should be noted that the specific material of the screen frame 120 is not excessively limited in the embodiment of the present application.

[0089] Of course, during manufacturing, the screen frame 120 can also be made of steel plates, plastics or synthetic materials while ensuring strength.

[0090] In order to realize the convenient installation and quick assembly of the projection screen 100, the screen frame 120 can be composed of a plurality of first frames 1211 and a second frame 1212 assembled together. Generally, considering the convenience of installation, the screen frame 120 can be composed of a plurality of first frames 1211 and a second frame 1212 assembled together.

[0091] However, in practice, the size can be taken into consideration and there are no excessive restrictions here.

[0092] It should be noted that the second frame 1212 may be a long frame, the first frame 1211 may be a short frame, and the first frame 1211 , the second frame 1212 , another first frame 1211 and another second frame 1212 are sequentially connected to form the inner frame 121 .

[0093] Among them, the first frame 1211 and the second frame 1212 can be folded to facilitate the folding of the scattered frame structure. On the one hand, it can reduce the transportation and / or home volume, and on the other hand, the folded screen frame 120 can be quickly assembled to enhance the product impact.

[0094] The vertical beam 1213 is located in the middle of the display film 110. The vertical beam 1213 has two vertical beam sections that can be connected. The two vertical beam sections are respectively hinged to the two second frames 1212. When the two vertical beam sections are connected, they are jointly supported between the two second frames 1212; when the two vertical beam sections are disconnected, the vertical beam sections are accommodated in the corresponding second frames 1212.

[0095] It should be noted that both vertical beam sections have a connecting end and a rotating end, wherein the connecting ends of the two vertical beam sections are connected to each other to be supported between the two second frames 1212 to complete the assembly of the screen frame 120; when folding, the first frame 1211 is folded first, the connecting ends of the two vertical beam sections are separated from each other, and the rotating ends of the two vertical beam sections are respectively rotated toward their respective second frames 1212 to be accommodated in the corresponding second frames 1212, and then the second frame 1212 is folded to complete the folding of the entire screen frame 120.

[0096] Through the above-mentioned arrangement, that is, through the foldable design of the screen frame 120, the scattered projection screens 100 can be folded. On the one hand, the volume of the screen entering the house can be reduced, so as to realize convenient entry into the house and reduce the transportation and / or entry volume; on the other hand, the folding and fixing is simple when assembling the inner frame 121 at the user's home, which can significantly improve the installation speed, greatly reduce the labor intensity, and improve the product influence; in addition, since the vertical beam 1213 is pre-installed between the two second frames 1212, the vertical beam 1213 is foldable in design, which can ensure the improvement of the efficiency of the folding and assembly of the overall inner frame 121 into the house, so as to play a supporting role and enhance the stability of the entire inner frame 121.

[0097] In some optional embodiments, at least one second frame 1212 has a receiving groove facing the other second frame 1212, and the detached vertical beam section is received in the receiving groove.

[0098] It should be noted that each second frame 1212 has a receiving groove facing the other second frame 1212, that is, the receiving groove faces the interior of the inner frame 121, so that the vertical beam section that is detached from the docking can be hidden in the receiving groove to complete the folding of the vertical beam 1213.

[0099] Among them, the size of the accommodating groove is slightly larger than the vertical beam section, so that the vertical beam section can be better accommodated in the accommodating groove, and no specific restrictions are imposed here.

[0100] like Figure 5 As shown, in some optional embodiments, when the two vertical beam sections are disconnected from each other, they rotate in opposite directions and are attached to the corresponding second frame 1212.

[0101] It should be noted that when the two vertical beam sections are disengaged from the docking, it means that the connecting ends of the two vertical beam sections are separated from each other, and the rotating ends of the two vertical beam sections respectively rotate toward their respective second frame 1212. At this time, the rotating ends of the two vertical beam sections respectively rotate in opposite directions and can be accommodated in the corresponding second frame 1212 on the same side.

[0102] In addition, it should be noted that, in order to improve the strength of the entire inner frame 121 , there are two vertical beams 1213 along the length direction of the second side frame 1212 , and the specific number can be adjusted according to actual conditions.

[0103] Fig. 9 A schematic diagram of a first state of a first frame in a projection screen provided in an embodiment of the present application, Fig.10 A schematic diagram of a second state of a first frame in a projection screen provided in an embodiment of the present application, Fig.11 A schematic diagram of a third state of the first frame in the projection screen provided in an embodiment of the present application.

[0104] like Figures 9 to 11 As shown, in some optional embodiments, the first frame 1211 includes two first frame segments 12111 rotatably connected to each other, the first ends of the two first frame segments 12111 are hinged to each other, and the second end of each first frame segment 12111 is hinged to the corresponding second frame 1212;

[0105] When the first frame 1211 is folded, the two first frame segments 12111 rotate toward the middle of the second frame 1212 so that the two first frame segments 12111 are stacked between the two second frames 1212 .

[0106] It should be noted that the two first frame segments 12111 are of the same length. For example, the first frame 1211 is folded as follows: Figures 9 to 11 As shown, the first frame segment 12111 has a first end and a second end, wherein the first ends of the two first frame segments 12111 are located in the middle of the first frame 1211 and are hinged to each other, which means that the first ends of the two first frame segments 12111 can be rotated; the second ends of the two first frame segments 12111 are respectively located on both sides of the first frame 1211, and are hinged to the second frame 1212, which means that the second ends of the two first frame segments 12111 can also be rotated. When the first frame 1211 is folded, the first ends of the two first frame segments 12111 move toward the inner frame 121, and the second ends of the two first frame segments 12111 abut against each other, so that the inner frame 121 is folded and compressed in the width direction to reduce the occupied space.

[0107] like Figures 1 to 11 As shown, in some optional embodiments, in the length direction of the second frame 1212, there is a receiving area between the first frame segment 12111 and the middle of the second frame 1212, and at least one vertical beam segment is received in the receiving area;

[0108] It should be noted that, when the first frame 1211 has been folded, at least part of the first frame segment 12111 can be accommodated in the second frame 1212, and the area not accommodated by the first frame segment 12111 along the length direction of the second frame 1212 forms an accommodating area, so that the folded vertical beam segment can be accommodated in the accommodating area. In other words, when the first frame 1211 and the vertical beam 1213 are both folded, the sum of the lengths of the first frame segment 12111 and the vertical beam segment accommodated in the second frame 1212 on the same side matches the length of the second frame 1212, so as to avoid interference between the first frame segment 12111 and the vertical beam segment when folding, thereby ensuring the stability of the entire folding process.

[0109] Accordingly, when the first frame 1211 has been folded, the first frame segment 12111 can be close to the second frame 1212, and the area not close to the first frame segment 12111 along the length direction of the second frame 1212 forms a receiving area, so that the folded vertical beam segment can be accommodated in the receiving area. In other words, when the first frame 1211 and the vertical beam 1213 are both folded, the sum of the length of the first frame segment 12111 and the vertical beam segment accommodated in the second frame 1212 on the same side matches the length of the second frame 1212, so as to avoid interference between the first frame segment 12111 and the vertical beam segment when folding, thereby ensuring the stability of the entire folding process.

[0110] The vertical beam section includes a first vertical beam section 12131 and a second vertical beam section 12132; the length of the first vertical beam section 12131 is greater than the length of the second vertical beam section 12132, and when the first vertical beam section 12131 and the second vertical beam section 12132 are disconnected, the second vertical beam section 12132 is accommodated in the accommodating area.

[0111] Fig.12 This is a schematic diagram of a first state of a rotating rod in a projection screen provided in an embodiment of the present application. Fig.13 A schematic diagram of a second state of a rotating rod in a projection screen provided in an embodiment of the present application, Fig.14 This is a schematic diagram of a third state of a rotating rod in a projection screen provided in an embodiment of the present application. Fig.15 A schematic diagram of the rotation of the rotating rod and the connecting rod in the projection screen provided in the embodiment of the present application, Fig.16 A schematic diagram of the partial structure of the inner frame in the projection screen provided in an embodiment of the present application.

[0112] like Figures 12 to 16 As shown, in addition, it should be noted that the unequal design of the length of the first vertical beam section 12131 and the length of the second vertical beam section 12132 is, on the one hand, to avoid the rotating rod 12112 set on the first frame section 12111 to avoid interference between the two, so that the second vertical beam section 12132 corresponding to the rotating rod 12112 on the first frame section 12111 can be better and completely accommodated in the accommodating area; on the other hand, it can increase the strength of the vertical beam section.

[0113] like Figure 12 to Figure 14As shown, in some embodiments, the rotating rod 12112 is disposed on one of the two first frame segments 12111. When the two first frame segments 12111 are folded, the rotating rod 12112 moves toward the middle of the second frame 1212 together with one of the two first frame segments 12111 until it is close to the second frame 1212 or is accommodated in the second frame 1212. When the two first frame segments 12111 are assembled, the two first frame segments 12111 are gradually straightened from the middle of the second frame 1212 until the entire first frame 1211 is straightened. At this time, in order to stabilize the stability of the assembly of the first frame segments 12111, the rotating rod 12112 is rotated from one end to the other first frame segment 12111. At this time, the rotating rod 12112 spans the two first frame segments 12111. The two first frame segments 12111 are connected and fixed by locking with the snap fasteners on the rotating rod 12112.

[0114] like Figures 1 to 16 As shown, in some optional embodiments, a connecting rod 123 is provided on the second frame 1212 , and the connecting rod 123 is configured to connect the two second frames 1212 when the first frame 1211 is folded.

[0115] It should be noted that there are two connecting rods 123, which are respectively arranged on the two second frame frames 1212. Of course, the two connecting rods 123 can also be arranged on the same second frame 1212, and no further restrictions are imposed on this.

[0116] Specifically, when the first frame 1211 is folded, the connecting rod 123 set on one of the two second frames 1212 gradually approaches the other second frame 1212, thereby fixing the connecting rod 123 and the other second frame 1212. In this way, not only the volume is reduced, but also the folded inner frame 121 is fixed to prevent the folded inner frame 121 from scattering, thereby improving stability.

[0117] like Figure 7 As shown, in some optional embodiments, either the first vertical beam section 12131 or the second vertical beam section 12132 is provided with a protrusion 12133, and the other has a notch 12134, the shapes of the protrusion 12133 and the notch 12134 match each other, and the protrusion 12133 is inserted into the notch 12134 to connect the first vertical beam section 12131 and the second vertical beam section 12132.

[0118] It is understandable that the design of the protrusion 12133 and the notch 12134 is intended to facilitate quick assembly and improve assembly efficiency when the first vertical beam section 12131 and the second vertical beam section 12132 are assembled.

[0119] Specifically, the protrusion 12133 corresponds to the notch 12134, wherein the size of the protrusion 12133 matches the notch 12134. The protrusion 12133 extends into the notch 12134, and the protrusion 12133 can be elastically designed to snap into the notch 12134, completing the connection between the first vertical beam section 12131 and the second vertical beam section 12132.

[0120] Alternatively, in another embodiment, the protrusion 12133 extends into the notch 12134, and a mounting hole is provided on the protrusion 12133, the mounting hole corresponds to the notch 12134, and the fastener passes through the notch 12134 and the mounting hole in sequence to complete the connection between the first vertical beam section 12131 and the second vertical beam section 12132.

[0121] It should be noted that in the embodiment of the present application, considering the cost of the fasteners, the fasteners may be screws, and correspondingly, the mounting holes and the notches 12134 may be threaded holes, the fasteners may pass through the notches 12134 and the mounting holes, and may be fixed by tightening the first vertical beam section 12131 and the second vertical beam section 12132.

[0122] Of course, when the first vertical beam section 12131 and the second vertical beam section 12132 need to be separated and folded, it is only necessary to loosen the fasteners and then take out the fasteners one by one.

[0123] Of course, in another embodiment, threaded holes may be provided on both the first vertical beam segment 12131 and the second vertical beam segment 12132, and threaded connectors may pass through the respective threaded holes in sequence to connect the first vertical beam segment 12131 and the second vertical beam segment 12132.

[0124] Fig.17 This is a schematic diagram of the structure of the first hinge unit in the projection screen provided in an embodiment of the present application. Fig.18 This is a schematic diagram of the structure of the second hinge unit in the projection screen provided in an embodiment of the present application. Fig.19 A schematic diagram of a first state of a second frame in a projection screen provided in an embodiment of the present application, Fig. 20 A schematic diagram of a second state of a second frame in a projection screen provided in an embodiment of the present application, Fig.21 A schematic diagram of a third state of the second frame in the projection screen provided in an embodiment of the present application.

[0125] like Figures 1 to 21 As shown, in some optional embodiments, a hinge unit 124 is further included, and the hinge unit 124 includes a first hinge unit 1241 and a second hinge unit 1242;

[0126] The first hinge unit 1241 is located in the middle of the second frame 1212 so that the second frame 1212 can be folded, and the second hinge unit 1242 is located in the middle of the first frame 1211 so that the first frame 1211 can be folded.

[0127] It should be noted that the two vertical beams 1213 are located on both sides of the first hinge unit 1241 .

[0128] There are two connecting rods 123 , which are also located on both sides of the first hinge unit 1241 . The connecting rods 123 are closer to the first hinge unit 1241 to avoid interference when the vertical beam 1213 is folded.

[0129] In addition, it should be noted that the structure of the second hinge unit 1242 and the first hinge unit 1241 may be the same or different. Specifically, the embodiments of the present application do not impose too many restrictions on this.

[0130] It should be noted that the second hinge unit 1242 will automatically perform self-locking and fixing, which is due to the special structure of the design of the second hinge unit 1242. The second hinge unit 1242 is mainly composed of the following parts: a spring, a top piece, a piece with a top piece opening, and a rivet. When the second hinge unit 1242 is folded and flattened, the top piece and the top piece opening inside cooperate to produce a self-locking behavior.

[0131] The working principle is shown in the figure. Folding can be achieved only when the self-locking top piece is unlocked away from the opening slot. After the top piece is pushed in, self-locking occurs. In the process of the second hinge unit 1242 being flattened from folding, the spring compression always gives the top piece an upward force. When the second hinge unit 1242 is flattened from the folded state, at this time, due to the existence of the opening position, the top piece pushes into the opening to cooperate, completes self-locking, and then completes the fixation of the screen frame 120.

[0132] In some examples, the screen frame 120 further includes an outer frame 122 , which surrounds the inner frame 121 . The material used for the outer frame 122 may be the same as that of the inner frame 121 .

[0133] Fig. 22 An exploded view of a display film in a projection screen provided in an embodiment of the present application, such as Fig. 22 As shown, it should be noted that the display film 110 can usually be composed of a hard layer, a Fresnel structure layer and a projection layer, etc., and has a certain strength and rigidity, and can have a certain verticality in a vertical free hanging state so that the display film 110 looks flat, but because it still has a certain softness, if there is no support or is disturbed by external forces, the display film 110 still cannot meet the flatness requirements required for display, and the screen is uneven, which will cause the laser projection image to be deformed, blurred, uneven in brightness, or other degradation problems.

[0134] In order to flatten the display film 110 , in some optional implementations, the display film 110 includes a film body and a synthetic cloth 111 that are bonded to each other.

[0135] Generally, the diaphragm body is made of a rigid material, and the synthetic cloth 111 generally has the characteristics of being inelastic, ultra-thin, dense and high-strength. In this way, when the synthetic cloth 111 and the diaphragm body are bonded, an integrated structure can be formed between the two, thereby facilitating the transmission of force and allowing the diaphragm body to stretch as the synthetic cloth 111 deforms.

[0136] Specifically, the synthetic fabric 111 can generally be a soft fabric, so that the synthetic fabric 111 can transmit the force well when stretched, and has a relatively stable property, and can adapt to a relatively wide range of environments, for example, it can maintain good flatness and reliability in an ambient temperature between -10°C and 40°C.

[0137] It should be noted that if Fig. 22 As shown, after the inner frame 121 is assembled, when the display film 110 is assembled, the pull rod 112 with holes is inserted into the synthetic cloth 111, and the holes of the synthetic cloth 111 and the pull rod 112 correspond to each other. At the same time, there are threaded holes at corresponding positions on the inner frame 121. When the threaded holes of the synthetic cloth 111, the pull rod 112 and the inner frame 121 are aligned, screws are installed on the inner frame 121. By designing the stroke size of the synthetic cloth 111, the display film 110 is continuously tightened, thereby completing the fixation of the entire display film 110.

[0138] at last, Fig.23 An exploded view of a screen frame in a projection screen provided in an embodiment of the present application, such as Fig.23 As shown, when assembling the outer frame 122, the segmented outer frame 122 is fixed to the inner frame 121 by screws, so that the entire projection screen 100 is installed.

[0139] The projection screen provided in the embodiment of the present application includes a display film, the display film has a projection light-receiving surface; a screen frame, the screen frame includes an inner frame, the inner frame includes a first frame, a second frame and a vertical beam, there are two first frames and two second frames, and the two first frames and the second frames are alternately arranged to surround the outer periphery of the display film, wherein the length of the second frame is greater than the length of the first frame, and the first frame can be folded; the vertical beam is located in the middle of the display film, the vertical beam has two vertical beam sections that can be connected, the two vertical beam sections are respectively hinged to the two second frames, and the two vertical beam sections are jointly supported between the two second frames when connected; when the two vertical beam sections are detached from the connection, the vertical beam sections are accommodated in the corresponding second frames.

[0140] Through the foldable design of the screen frame, scattered projection screens can be folded, which can, on the one hand, reduce the volume of the screen entering the house, realize convenient entry into the house, and reduce the transportation and or entry volume; on the other hand, the folding and fixing when assembling the inner frame at the user's home is simple, which can significantly improve the installation speed, greatly reduce the labor intensity, and enhance the product influence; in addition, since the vertical beam is pre-installed between the two second frames, the vertical beam is foldable, which ensures the improvement of the overall inner frame folding and assembly efficiency when entering the house, while playing a supporting role and enhancing the stability of the entire inner frame.

[0141] In addition, if Figures 1 to 23 As shown, the embodiment of the present application further provides a projection screen 100, comprising:

[0142] A display film 110, wherein the display film 110 has a projection light receiving surface;

[0143] The screen frame 120 includes an inner frame 121, the inner frame 121 has a first frame 1211, a second frame 1212 and a vertical beam 1213, the first frame 1211 and the second frame 1212 are arranged around the periphery of the display film 110, wherein the first frame 1211 can be folded, the vertical beam 1213 has two vertical beam sections that can be connected, and the two vertical beam sections are jointly supported between the two second frames 1212 when connected, and when the two vertical beam sections are disconnected, the vertical beam sections are accommodated in the corresponding second frames 1212.

[0144] The projection screen provided in the embodiment of the present application can fold scattered projection screens through the foldable design of the screen frame. On the one hand, it can reduce the volume of the screen entering the house, realize convenient entry into the house, and reduce the transportation and or entry volume; on the other hand, the folding and fixing is simple when assembling the inner frame at the user's home, which can significantly improve the installation speed, greatly reduce the labor intensity, and improve the product impact; in addition, since the vertical beam is pre-installed between the two second frames, the vertical beam is foldable, which can ensure the improvement of the efficiency of the overall inner frame folding and assembly into the house, while playing a supporting role and enhancing the stability of the entire inner frame.

[0145] In addition, an embodiment of the present application further provides a projection system, including a projection device and the above-mentioned projection screen 100 , wherein the projection device is used to project a projection picture onto the projection screen 100 .

[0146] The projection system provided in this embodiment specifically includes a projection device and the projection screen 100 in the aforementioned first embodiment. The projection device is used to project a projection picture onto the display film 110 of the projection screen 100 .

[0147] The specific structure, working principle and function of the projection screen 100 have been described in detail in the aforementioned embodiment 1, and will not be repeated here.

[0148] Specifically, in the projection system of this embodiment, the projection device can be any existing projector, such as a laser projector, etc. The projection device can project a projection image onto the display film 110 of the projection screen 100, so that the display film 110 can display the projection image for people to watch.

[0149] The projection system provided in this embodiment, wherein the specific structure, working principle and function of the projection screen 100 have been described in detail in the aforementioned embodiment 1, and will not be repeated here.

[0150] Through the foldable design of the screen frame, scattered projection screens can be folded, which can, on the one hand, reduce the volume of the screen entering the house, realize convenient entry into the house, and reduce the transportation and or entry volume; on the other hand, the folding and fixing when assembling the inner frame at the user's home is simple, which can significantly improve the installation speed, greatly reduce the labor intensity, and enhance the product influence; in addition, since the vertical beam is pre-installed between the two second frames, the vertical beam is foldable, which ensures the improvement of the overall inner frame folding and assembly efficiency when entering the house, while playing a supporting role and enhancing the stability of the entire inner frame.

[0151] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0152] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0153] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A projection screen, characterized in that: include: A display film, wherein the display film has a projection light receiving surface; A screen frame, the screen frame comprises an inner frame, the inner frame comprises a first frame, a second frame and a vertical beam, the first frame and the second frame are both two, and the two first frames and the two second frames are alternately arranged to surround the periphery of the display film, wherein the length of the second frame is greater than the length of the first frame, and the first frame can be folded; The vertical beam is located in the middle of the display film, and has two vertical beam sections that can be connected. The two vertical beam sections are respectively hinged to the two second frames. When the two vertical beam sections are connected, they are jointly supported between the two second frames; when the two vertical beam sections are disconnected, the vertical beam sections are accommodated in the corresponding second frames.

2. The projection screen according to claim 1, characterized in that: At least one of the second frames has a receiving groove facing the other second frame, and the disengaged vertical beam section is received in the receiving groove.

3. The projection screen according to claim 2, characterized in that: When the two vertical beam sections are disconnected from each other, they rotate in opposite directions and are attached to the corresponding second frame.

4. The projection screen according to any one of claims 1 to 3, characterized in that: The first frame includes two first frame segments rotatably connected to each other, the first ends of the two first frame segments are hinged to each other, and the second end of each first frame segment is hinged to the corresponding second frame; When the first frame is folded, the two first frame segments rotate toward the middle of the second frame, so that the two first frame segments are stacked between the two second frames.

5. The projection screen according to claim 4, characterized in that: In the length direction of the second frame, there is a receiving area between the first frame segment and the middle portion of the second frame, and at least one of the vertical beam segments is received in the receiving area; The vertical beam section includes a first vertical beam section and a second vertical beam section; the length of the first vertical beam section is greater than the length of the second vertical beam section, and when the first vertical beam section and the second vertical beam section are disconnected, the second vertical beam section is accommodated in the accommodating area.

6. The projection screen according to claim 5, characterized in that: A connecting rod is provided on the second frame, and the connecting rod is configured to connect two second frames when the first frame is folded.

7. The projection screen according to claim 5, characterized in that Either one of the first vertical beam section and the second vertical beam section is provided with a protrusion, and the other has a notch. The protrusion and the notch match each other in shape, and the protrusion is inserted into the notch to connect the first vertical beam section and the second vertical beam section.

8. The projection screen according to any one of claims 1 to 3, characterized in that: Also included is a hinge unit, the hinge unit including a first hinge unit and a second hinge unit; The first hinge unit is located in the middle of the second frame so that the second frame can be folded, and the second hinge unit is located in the middle of the first frame so that the first frame can be folded.

9. A projection screen, characterized in that: include: A display film, wherein the display film has a projection light receiving surface; A screen frame, the screen frame includes an inner frame, a first frame, a second frame and a vertical beam, the first frame and the second frame are arranged around the periphery of the display film, wherein the first frame can be folded, and the vertical beam has two vertical beam sections that can be connected, and the two vertical beam sections are jointly supported between the two second frames when connected, and when the two vertical beam sections are disconnected, the vertical beam section is accommodated in the corresponding second frame.

10. A projection system, characterized in that: It comprises a projection device and a projection screen as described in any one of claims 1 to 9, wherein the projection device is used to project a projection picture onto the projection screen.

Images